Carriage-bolt



UNITED STATES PATENT OFFICE.

ALVIN POND, OF HAMDEN, ASSIGNOR T() F. vH. LAMSON ANI) W. W. WOOl- RUFF, OF MOUNT CARMEL, CONNECTICUT.

CARRIAGE-BOLT.

Specification forming part of Letters Patent No. 47,215, dated April 11, 1365.

To all whom it may concern:

Be it known that I, ALVIN POND, of Hala den, in the county of New I-Iaven and State ot' Connecticut, have invented, made, and applied to use a certain new and useful Improvement in the Manufacture of Bolts for Carriages, 8m. 5 and I do hereby declare the following to be a full, clear, and exact description of the said invention, reference being had to the annexed drawings, making part of this speeication, wherein- Figure lis a plan ot' the divided die emlloyed for making my said bolt. Fig. 2 is a section through said dies at the lineaa. Fig.

3 is an elevation of the bolts, and Fig. 4 is al cross-section in larger size of a bolt made in my improved manner.

Similar letters denote the same parts. Bolts for carriages have heretofore been made from a round rod of iron with a squared Y portion near the head to prevent them from turning in the hole or mortise in whichythey may be introduced. Said square has been produced by dies that have compressed the round rod into a somewhat square shape, aided by the upsetting ofthe rod in the aet ot' heading the same.

The nature ot' my said-invention consists not in the manufacture of bolts forearria ges,

&e., with a square bodynext to the head, but.

in terminating said square body with sharp corners at the point. where the rounded por tion commences, said bolt being formed in a die from around barof iron and headed simultaneously with the formation of said square body. The' object in forming the. bolt with sharp eorners at the termination of the squared portion is to prevent the bolt splitting any piece of wood when driven into a hole or Inortise, as said square corners score out the wood y and do uothave any outward wedging action,

as is the c: se with bolts that are formed with q a square tapering up toward the head from the round body; and a bolt made on my plan has a much better and more finished appearanee than those heretofore made from round Iron.

ing my die. Iheyare to be of the required size and made by planing the sides that are to come together with a groove, after which said sides are set together and the blocks clamped to eaeh other, and a `reamer introduced to bore a hole that is of the same dialneter, or nearly so,` as the rod of iron to be operated on. 4Said hole is slightly tapering.

Iihen open the die, and by means of'suitable ehisels and tiles form the square recess .of the proper size and length, terminating with a sharp angle, or eorner, as at l 1, the squared i portion extending from there to the face o f the t What I claim, and desire to seourelby Let ters Patent, is-

Manufaeturing bolts from round iron by means of dies formed so as to produce sharp corners at the ends ofthe squared portion, set forth.

In witness whereof [have hereunto set my signature this 5th day ot' January` 1865.

ALVIN POND.

Witnesses:

y Guns. L. BEEOIIER,

LEROY P. MATTHEWS.

In the drawings, b and c are the hloelis formy 

